From b03f8e33706718b1f3c4bda8dc4a058911645557 Mon Sep 17 00:00:00 2001
From: Daniel Schoepe <daniel.schoepe@gmail.com>
Date: Mon, 21 Sep 2009 00:14:55 +0200
Subject: Only use search history for completion in X.A.Search

Ignore-this: 807fcd4fa14a25ecc9787940f9950736

darcs-hash:20090920221455-7f603-eca315cbb45fe6bc4f34e45a7f9a00f6770119e4.gz
---
 XMonad/Actions/Search.hs |  5 +++--
 XMonad/Prompt.hs         | 25 ++++++++++++++++++-------
 2 files changed, 21 insertions(+), 9 deletions(-)

(limited to 'XMonad')

diff --git a/XMonad/Actions/Search.hs b/XMonad/Actions/Search.hs
index 5d1a57c..a9f6709 100644
--- a/XMonad/Actions/Search.hs
+++ b/XMonad/Actions/Search.hs
@@ -59,7 +59,7 @@ import Data.Char (chr, ord, isAlpha, isMark, isDigit)
 import Data.List (isPrefixOf)
 import Numeric (showIntAtBase)
 import XMonad (X(), MonadIO, liftIO)
-import XMonad.Prompt (XPrompt(showXPrompt), mkXPrompt, XPConfig(), historyCompletion)
+import XMonad.Prompt (XPrompt(showXPrompt), mkXPrompt, XPConfig(), historyCompletionP)
 import XMonad.Prompt.Shell (getBrowser)
 import XMonad.Util.Run (safeSpawn)
 import XMonad.Util.XSelection (getSelection)
@@ -351,7 +351,8 @@ namedEngine name (SearchEngine _ site) = searchEngineF name site
    Prompt's result, passes it to a given searchEngine and opens it in a given
    browser. -}
 promptSearchBrowser :: XPConfig -> Browser -> SearchEngine -> X ()
-promptSearchBrowser config browser (SearchEngine name site) = mkXPrompt (Search name) config historyCompletion $ search browser site
+promptSearchBrowser config browser (SearchEngine name site) =
+    mkXPrompt (Search name) config (historyCompletionP ("Search [" `isPrefixOf`)) $ search browser site
 
 {- | Like 'search', but in this case, the string is not specified but grabbed
  from the user's response to a prompt. Example:
diff --git a/XMonad/Prompt.hs b/XMonad/Prompt.hs
index 8e6f97a..07f80c0 100644
--- a/XMonad/Prompt.hs
+++ b/XMonad/Prompt.hs
@@ -54,6 +54,7 @@ module XMonad.Prompt
     , decodeInput
     , encodeOutput
     , historyCompletion
+    , historyCompletionP
     -- * History filters
     , deleteAllDuplicates
     , deleteConsecutive
@@ -127,15 +128,15 @@ data XPConfig =
         , height            :: !Dimension -- ^ Window height
         , historySize       :: !Int       -- ^ The number of history entries to be saved
         , historyFilter     :: [String] -> [String]
-                                          -- ^ a filter to determine which
-                                          -- history entries to remember
+                                         -- ^ a filter to determine which
+                                         -- history entries to remember
         , promptKeymap      :: M.Map (KeyMask,KeySym) (XP ())
-        , completionKey     :: KeySym      -- ^ Key that should trigger completion
-                                          -- ^ Mapping from key combinations to actions
+                                         -- ^ Mapping from key combinations to actions
+        , completionKey     :: KeySym     -- ^ Key that should trigger completion
         , defaultText       :: String     -- ^ The text by default in the prompt line
         , autoComplete      :: Maybe Int  -- ^ Just x: if only one completion remains, auto-select it,
         , showCompletionOnTab :: Bool     -- ^ Only show list of completions when Tab was pressed
-                                          --   and delay by x microseconds
+                                         --   and delay by x microseconds
         }
 
 data XPType = forall p . XPrompt p => XPT p
@@ -277,7 +278,11 @@ mkXPromptWithReturn t conf compl action = do
       liftIO $ writeHistory $ M.insertWith
                                 (\xs ys -> take (historySize conf)
                                         . historyFilter conf $ xs ++ ys)
-                                (showXPrompt t) [command st'] hist
+                                (showXPrompt t) (historyFilter conf [command st'])
+                                hist
+                                -- we need to apply historyFilter before as well, since
+                                -- otherwise the filter would not be applied if
+                                -- there is no history
       Just <$> action (command st')
     else return Nothing
 
@@ -862,7 +867,13 @@ breakAtSpace s
 --   'getShellCompl'; you pass it to mkXPrompt, and it will make completions work
 --   from the query history stored in ~\/.xmonad\/history.
 historyCompletion :: ComplFunction
-historyCompletion x = fmap (deleteConsecutive . filter (isInfixOf x) . M.fold (++) []) readHistory
+historyCompletion = historyCompletionP (const True)
+
+-- | Like 'historyCompletion' but only uses history data from Prompts whose
+-- name satisfies the given predicate.
+historyCompletionP :: (String -> Bool) -> ComplFunction
+historyCompletionP p x = fmap (toComplList . M.filterWithKey (const . p)) readHistory
+    where toComplList = deleteConsecutive . filter (isInfixOf x) . M.fold (++) []
 
 -- | Sort a list and remove duplicates. Like 'deleteAllDuplicates', but trades off
 --   laziness and stability for efficiency.
-- 
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